RELATED PARTY TRANSACTIONS: (Tables)

9 Months Ended

Sep. 30, 2020

RELATED PARTY TRANSACTIONS:

Schedule of receivable and payable balances with related parties

Receivable and payable balances with related parties are shown below (in millions):

	At September 30,		At December 31,
	2020		2019
Related parties receivable current:
Grupo Mexico and affiliates:
Asarco LLC	$	22.4	$	10.8
AMMINCO Apoyo Administrativo, S.A. de C.V. (“AMMINCO”)		—		0.1
Compania Perforadora Mexico S.A.P.I. de C.V. and affiliates		0.3		0.3
Grupo Mexico		2.7		2.7
Mexico Generadora de Energia S. de R.L. ("MGE")		15.1		15.3
Grupo Mexico Servicios de Ingenieria, S.A. de C.V.		0.2		0.2
Related to the controlling group:
Boutique Bowling de Mexico, S.A. de C.V.		0.1		0.1
Mexico Transportes Aereos, S.A. de C.V. ("Mextransport")		1.5		0.4
Operadora de Cinemas, S.A. de C.V.		0.1		0.1
	$	42.4	$	30.0
Related parties receivable non-current:
Grupo Mexico and affiliates:
Asarco LLC	$	58.0	$	59.5
Related parties payable:
Grupo Mexico and affiliates:
Asarco LLC	$	18.3	$	4.3
AMMINCO		17.5		16.9
Eolica El Retiro, S.A.P.I. de C.V.		0.3		—
Ferrocarril Mexicano, S.A. de C.V.		5.3		6.4
Grupo Mexico		0.9		1.1
MGE		36.4		40.2
Mexico Compania Constructora S.A de C.V.		19.4		16.0
Grupo Mexico Servicios de Ingenieria, S.A. de C.V.		0.5		—
Related to the controlling group:
Boutique Bowling de Mexico, S.A. de C.V.		0.1		0.2
Mexico Transportes Aereos, S.A. de C.V. (“Mextransport”)		0.8		1.2
Operadora de Cinemas, S.A. de C.V.		0.1		0.1
	$	99.6	$	86.4

Grupo Mexico and affiliates

RELATED PARTY TRANSACTIONS:

Schedule of purchase and sales activities with related parties

The following table summarizes the purchase and sale activities with Grupo Mexico and its affiliates in the nine months ended September 30, 2020 and 2019 (in millions):

	2020		2019
Purchase activity
Asarco LLC	$	224.3	$	32.2
AMMINCO		13.4		6.4
Eolica El Retiro, S.A.P.I. de C.V.		0.8		2.9
Ferrocarril Mexicano, S.A. de C.V.		36.8		35.1
Grupo Mexico		7.5		7.9
MGE		157.2		147.3
Mexico Compania Constructora S.A de C.V.		36.0		47.0
Grupo Mexico Servicios de Ingenieria, S.A. de C.V.		6.4		9.4
Total purchases	$	482.4	$	288.2
Sales activity
Asarco LLC	$	58.6	$	10.6
AMMINCO		0.1		—
Ferrocarril Mexicano, S.A. de C.V.		—		0.1
MGE		37.7		33.3
Total sales	$	96.4	$	44.0

Related to the controlling group

RELATED PARTY TRANSACTIONS:

Schedule of purchase and sales activities with related parties

The following table summarizes the purchase and sales activities with other Larrea family companies in the nine months ended September 30, 2020 and 2019 (in millions):

	2020		2019
Purchase activity
Boutique Bowling de Mexico S.A. de C.V.	$	0.3	$	0.3
Mextransport		3.0		1.1
Operadora de Cinemas S.A. de C.V.		0.1		0.1
Total purchases	$	3.4	$	1.5
Sales activity
Boutique Bowling de Mexico S.A. de C.V.	$	0.1	$	0.1
Empresarios Industriales de Mexico, S.A. de C.V.		—		0.2
Mextransport		1.2		1.3
Operadora de Cinemas S.A. de C.V.		0.1		0.1
Total sales	$	1.4	$	1.7